＊1： Correction of rated torque and max. torque due to load fluctuation is not required.However, if ambient temperature exceeds 30°C, be sure to correct the rated torque and max. torque with temperature correction factor shown in the table.MJC's allowable operating temperature is -20°C to 60°C.
＊2： These are values with max. bore diameter.

Selection

Selection based on shaft diameter and rated torque

The area bounded by the shaft diameter and rated torque indicates is the selection size.

Selection Example

In case of selected parameters of shaft diameter of φ15 and load torque of 6 N•m, the selected size for MJS-＊＊CS-RD, MJS-＊＊CS-ERD is MJS-30CS-RD, MJS-30CS-ERD.

Ambient Temperature / Temperature Correction Factor

Ambient Temperature

Temperature Correction Factor

-20℃ to 30℃

1.00

30℃ to 40℃

0.80

40℃ to 60℃

0.70

Sleeve Details

Tight Fit

The hub and sleeve are press-fit and can be used under zero backlash＊1.Since the sleeve's vibration absorption can raise the gain of a servomotor, this unit can achieve high responsive operation exceeding the Disk coupling.

＊1： For the torque used under zero backlash, please refer to Performance table.

Easy Fit

This unit allows you to easily assemble and partition the hub and sleeve.
This allows you to reduce the time of assembling the unit and maintenance.
It is possible to mount a hub on the shaft in advance and easily assemble the unit even in a location where the coupling is less-visible.

Slip torque

As in the table below, the clamping type MJS-CS has different slip torque according to the bore diameter. Take care during selection.

Unit : N・m

Part Number

Bore Diameter (mm)

3

4

4.5

5

6

6.35

7

8

9.525

10

11

12

14

15

16

18

19

20

22

24

25

28

30

32

35

38

MJS-20CS

0.8

1.7

2.2

2.6

3.5

3.8

4.4

5.3

MJS-25CS

1.9

2.6

3.4

4.9

5.4

6.4

7.9

10

11

8.6

8.9

MJS-30CS

7

7.6

8.7

10

13

14

16

17

14

16

17

MJS-40CS

28

35

37

MJS-55CS

40

46

53

66

72

79

92

98

100

110

130

130

140

MJS-65CS

110

120

130

150

160

170

190

210

220

260

280

300

300

300

These are test values based on the conditions of shaft dimensional allowance: h7, hardness: 34-40 HRC, and screw tightening torque of the values described in MJS-CS dimension tables. They are not guaranteed values.
Slip torque changes with usage conditions. Carry out tests under conditions similar to actual conditions in advance.

Change in static torsional stiffness due to temperature

This is a value under the condition where the static torsional stiffness at 20°C is 100%.
The change of torsional stiffness within the range of allowable operating temperature is as shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.